Related
My MVCE for SSL relay server:
#pragma once
#include <stdint.h>
#include <iostream>
#include <asio.hpp>
#include <asio/ssl.hpp>
namespace test
{
namespace setup
{
const uint32_t maxMessageSize = 1024 * 1024;
const uint32_t maxSessionsNum = 10;
}
enum class MessageType
{
LOG_ON = 0,
TEXT_MESSAGE = 1
};
class MessageHeader
{
public:
uint32_t messageType;
uint32_t messageLength;
MessageHeader(uint32_t messageType, uint32_t messageLength) : messageType(messageType), messageLength(messageLength) {}
};
class LogOn
{
public:
MessageHeader header;
uint32_t sessionId;
uint32_t isClient0;
LogOn() : header((uint32_t)MessageType::LOG_ON, sizeof(LogOn)) {}
};
class TextMessage
{
public:
MessageHeader header;
uint8_t data[];
TextMessage() : header((uint32_t)MessageType::TEXT_MESSAGE, sizeof(TextMessage)){}
};
class ClientSocket;
class Session
{
public:
ClientSocket* pClient0;
ClientSocket* pClient1;
};
Session* getSession(uint32_t sessionId);
class ClientSocket
{
public:
bool useTLS;
std::shared_ptr<asio::ip::tcp::socket> socket;
std::shared_ptr<asio::ssl::stream<asio::ip::tcp::socket>> socketSSL;
Session* pSession;
bool isClient0;
std::recursive_mutex writeBufferLock;
std::vector<char> readBuffer;
uint32_t readPos;
ClientSocket(asio::ip::tcp::socket& socket) : useTLS(false)
{
this->socket = std::make_shared<asio::ip::tcp::socket>(std::move(socket));
this->readBuffer.resize(setup::maxMessageSize + sizeof(MessageHeader));
this->readPos = 0;
}
ClientSocket(asio::ssl::stream<asio::ip::tcp::socket>& socket) : useTLS(true)
{
this->socketSSL = std::make_shared<asio::ssl::stream<asio::ip::tcp::socket>>(std::move(socket));
this->readBuffer.resize(setup::maxMessageSize + sizeof(MessageHeader));
this->readPos = 0;
}
bool writeSocket(uint8_t* pBuffer, uint32_t bufferSize)
{
try
{
std::unique_lock<std::recursive_mutex>
lock(this->writeBufferLock);
size_t writtenBytes = 0;
if (true == this->useTLS)
{
writtenBytes = asio::write(*this->socketSSL,
asio::buffer(pBuffer, bufferSize));
}
else
{
writtenBytes = asio::write(*this->socket,
asio::buffer(pBuffer, bufferSize));
}
return (writtenBytes == bufferSize);
}
catch (asio::system_error e)
{
std::cout << e.what() << std::endl;
}
catch (std::exception e)
{
std::cout << e.what() << std::endl;
}
catch (...)
{
std::cout << "Some other exception" << std::endl;
}
return false;
}
void asyncReadNextMessage(uint32_t messageSize)
{
auto readMessageLambda = [&](const asio::error_code errorCode, std::size_t length)
{
this->readPos += (uint32_t)length;
if (0 != errorCode.value())
{
//send socket to remove
printf("errorCode= %u, message=%s\n", errorCode.value(), errorCode.message().c_str());
//sendRemoveMeSignal();
return;
}
if ((this->readPos < sizeof(MessageHeader)))
{
asyncReadNextMessage(sizeof(MessageHeader) - this->readPos);
return;
}
MessageHeader* pMessageHeader = (MessageHeader*)this->readBuffer.data();
if (pMessageHeader->messageLength > setup::maxMessageSize)
{
//Message to big - should disconnect ?
this->readPos = 0;
asyncReadNextMessage(sizeof(MessageHeader));
return;
}
if (this->readPos < pMessageHeader->messageLength)
{
asyncReadNextMessage(pMessageHeader->messageLength - this->readPos);
return;
}
MessageType messageType = (MessageType)pMessageHeader->messageType;
switch(messageType)
{
case MessageType::LOG_ON:
{
LogOn* pLogOn = (LogOn*)pMessageHeader;
printf("LOG_ON message sessionId=%u, isClient0=%u\n", pLogOn->sessionId, pLogOn->isClient0);
this->isClient0 = pLogOn->isClient0;
this->pSession = getSession(pLogOn->sessionId);
if (this->isClient0)
this->pSession->pClient0 = this;
else
this->pSession->pClient1 = this;
}
break;
case MessageType::TEXT_MESSAGE:
{
TextMessage* pTextMessage = (TextMessage*)pMessageHeader;
if (nullptr != pSession)
{
if (this->isClient0)
{
if (nullptr != pSession->pClient1)
{
pSession->pClient1->writeSocket((uint8_t*)pTextMessage, pTextMessage->header.messageLength);
}
}
else
{
if (nullptr != pSession->pClient0)
{
pSession->pClient0->writeSocket((uint8_t*)pTextMessage, pTextMessage->header.messageLength);
}
}
}
}
break;
}
this->readPos = 0;
asyncReadNextMessage(sizeof(MessageHeader));
};
if (true == this->useTLS)
{
this->socketSSL->async_read_some(asio::buffer(this->readBuffer.data() + this->readPos, messageSize), readMessageLambda);
}
else
{
this->socket->async_read_some(asio::buffer(this->readBuffer.data() + this->readPos, messageSize), readMessageLambda);
}
}
};
class SSLRelayServer
{
public:
static SSLRelayServer* pSingleton;
asio::io_context ioContext;
asio::ssl::context sslContext;
std::vector<std::thread> workerThreads;
asio::ip::tcp::acceptor* pAcceptor;
asio::ip::tcp::endpoint* pEndpoint;
bool useTLS;
Session* sessions[setup::maxSessionsNum];
SSLRelayServer() : pAcceptor(nullptr), pEndpoint(nullptr), sslContext(asio::ssl::context::tlsv13_server)//sslContext(asio::ssl::context::sslv23)
{
this->useTLS = false;
this->pSingleton = this;
//this->sslContext.set_options(asio::ssl::context::default_workarounds | asio::ssl::context::no_sslv2);
this->sslContext.set_password_callback(std::bind(&SSLRelayServer::getPrivateKeyPEMFilePassword, this));
this->sslContext.use_certificate_chain_file("server_cert.pem");
this->sslContext.use_private_key_file("server_private_key.pem",
asio::ssl::context::pem);
}
static SSLRelayServer* getSingleton()
{
return pSingleton;
}
std::string getPrivateKeyPEMFilePassword() const
{
return "";
}
void addClientSocket(asio::ip::tcp::socket& socket)
{
ClientSocket* pClientSocket = new ClientSocket(socket); // use smart pointers
pClientSocket->asyncReadNextMessage(sizeof(MessageHeader));
}
void addSSLClientToken(asio::ssl::stream<asio::ip::tcp::socket>&sslSocket)
{
ClientSocket* pClientSocket = new ClientSocket(sslSocket); // use smart pointers
pClientSocket->asyncReadNextMessage(sizeof(MessageHeader));
}
void handleAccept(asio::ip::tcp::socket& socket, const asio::error_code& errorCode)
{
if (!errorCode)
{
printf("accepted\n");
if (true == socket.is_open())
{
asio::ip::tcp::no_delay no_delay_option(true);
socket.set_option(no_delay_option);
addClientSocket(socket);
}
}
}
void handleAcceptTLS(asio::ip::tcp::socket& socket, const asio::error_code& errorCode)
{
if (!errorCode)
{
printf("accepted\n");
if (true == socket.is_open())
{
asio::ip::tcp::no_delay no_delay_option(true);
asio::ssl::stream<asio::ip::tcp::socket> sslStream(std::move(socket), this->sslContext);
try
{
sslStream.handshake(asio::ssl::stream_base::server);
sslStream.lowest_layer().set_option(no_delay_option);
addSSLClientToken(sslStream);
}
catch (asio::system_error e)
{
std::cout << e.what() << std::endl;
return;
}
catch (std::exception e)
{
std::cout << e.what() << std::endl;
return;
}
catch (...)
{
std::cout << "Other exception" << std::endl;
return;
}
}
}
}
void startAccept()
{
auto acceptHandler = [this](const asio::error_code& errorCode, asio::ip::tcp::socket socket)
{
printf("acceptHandler\n");
handleAccept(socket, errorCode);
this->startAccept();
};
auto tlsAcceptHandler = [this](const asio::error_code& errorCode, asio::ip::tcp::socket socket)
{
printf("tlsAcceptHandler\n");
handleAcceptTLS(socket, errorCode);
this->startAccept();
};
if (true == this->useTLS)
{
this->pAcceptor->async_accept(tlsAcceptHandler);
}
else
{
this->pAcceptor->async_accept(acceptHandler);
}
}
bool run(uint32_t servicePort, uint32_t threadsNum, bool useTLS)
{
this->useTLS = useTLS;
this->pEndpoint = new asio::ip::tcp::endpoint(asio::ip::tcp::v4(), servicePort);
this->pAcceptor = new asio::ip::tcp::acceptor(ioContext, *pEndpoint);
this->pAcceptor->listen();
this->startAccept();
for (uint32_t threadIt = 0; threadIt < threadsNum; ++threadIt)
{
this->workerThreads.emplace_back([&]() {
#ifdef WINDOWS
SetThreadDescription(GetCurrentThread(), L"SSLRelayServer worker thread");
#endif
this->ioContext.run(); }
);
}
return true;
}
Session* getSession(uint32_t sessionId)
{
if (nullptr == this->sessions[sessionId])
{
this->sessions[sessionId] = new Session();
}
return this->sessions[sessionId];
}
};
SSLRelayServer* SSLRelayServer::pSingleton = nullptr;
Session* getSession(uint32_t sessionId)
{
SSLRelayServer* pServer = SSLRelayServer::getSingleton();
Session* pSession = pServer->getSession(sessionId);
return pSession;
}
class Client
{
public:
asio::ssl::context sslContext;
std::shared_ptr<asio::ip::tcp::socket> socket;
std::shared_ptr<asio::ssl::stream<asio::ip::tcp::socket>> socketSSL;
asio::io_context ioContext;
bool useTLS;
bool isClient0;
uint32_t readDataIt;
std::vector<uint8_t> readBuffer;
std::thread listenerThread;
Client() : sslContext(asio::ssl::context::tlsv13_client)//sslContext(asio::ssl::context::sslv23)
{
sslContext.load_verify_file("server_cert.pem");
//sslContext.set_verify_mode(asio::ssl::verify_peer);
using asio::ip::tcp;
using std::placeholders::_1;
using std::placeholders::_2;
sslContext.set_verify_callback(std::bind(&Client::verifyCertificate, this, _1, _2));
this->readBuffer.resize(setup::maxMessageSize);
this->readDataIt = 0;
}
bool verifyCertificate(bool preverified, asio::ssl::verify_context& verifyCtx)
{
return true;
}
void listenerRunner()
{
#ifdef WINDOWS
if (this->isClient0)
{
SetThreadDescription(GetCurrentThread(), L"listenerRunner client0");
}
else
{
SetThreadDescription(GetCurrentThread(), L"listenerRunner client1");
}
#endif
while (1==1)
{
asio::error_code errorCode;
size_t transferred = 0;
if (true == this->useTLS)
{
transferred = this->socketSSL->read_some(asio::buffer(this->readBuffer.data() + this->readDataIt, sizeof(MessageHeader) - this->readDataIt), errorCode);
}
else
{
transferred = this->socket->read_some(asio::buffer(this->readBuffer.data() + this->readDataIt, sizeof(MessageHeader) - this->readDataIt), errorCode);
}
this->readDataIt += transferred;
if (0 != errorCode.value())
{
this->readDataIt = 0;
continue;
}
if (this->readDataIt < sizeof(MessageHeader))
continue;
MessageHeader* pMessageHeader = (MessageHeader*)this->readBuffer.data();
if (pMessageHeader->messageLength > setup::maxMessageSize)
{
exit(1);
}
bool resetSocket = false;
while (pMessageHeader->messageLength > this->readDataIt)
{
printf("readDataIt=%u, threadId=%u\n", this->readDataIt, GetCurrentThreadId());
{
//message not complete
if (true == this->useTLS)
{
transferred = this->socketSSL->read_some(asio::buffer(this->readBuffer.data() + this->readDataIt, pMessageHeader->messageLength - this->readDataIt), errorCode);
}
else
{
transferred = this->socket->read_some(asio::buffer(this->readBuffer.data() + this->readDataIt, pMessageHeader->messageLength - this->readDataIt), errorCode);
}
this->readDataIt += transferred;
}
if (0 != errorCode.value())
{
exit(1);
}
}
MessageType messageType = (MessageType)pMessageHeader->messageType;
switch (messageType)
{
case MessageType::TEXT_MESSAGE:
{
TextMessage* pTextMessage = (TextMessage*)pMessageHeader;
printf("TEXT_MESSAGE: %s\n", pTextMessage->data);
}
break;
}
this->readDataIt = 0;
}
}
void run(uint32_t sessionId, bool isClient0, bool useTLS, uint32_t servicePort)
{
this->useTLS = useTLS;
this->isClient0 = isClient0;
if (useTLS)
{
socketSSL = std::make_shared<asio::ssl::stream<asio::ip::tcp::socket>>(ioContext, sslContext);
}
else
{
socket = std::make_shared<asio::ip::tcp::socket>(ioContext);
}
asio::ip::tcp::resolver resolver(ioContext);
asio::ip::tcp::resolver::results_type endpoints = resolver.resolve(asio::ip::tcp::v4(), "127.0.0.1", std::to_string(servicePort));
asio::ip::tcp::no_delay no_delay_option(true);
if (true == useTLS)
{
asio::ip::tcp::endpoint sslEndpoint = asio::connect(socketSSL->lowest_layer(), endpoints);
socketSSL->handshake(asio::ssl::stream_base::client);
socketSSL->lowest_layer().set_option(no_delay_option);
}
else
{
asio::ip::tcp::endpoint endpoint = asio::connect(*socket, endpoints);
socket->set_option(no_delay_option);
}
this->listenerThread = std::thread(&Client::listenerRunner, this);
LogOn logOn;
logOn.isClient0 = isClient0;
logOn.sessionId = sessionId;
const uint32_t logOnSize = sizeof(logOn);
if (true == useTLS)
{
size_t transferred = asio::write(*socketSSL, asio::buffer(&logOn, sizeof(LogOn)));
}
else
{
size_t transferred = asio::write(*socket, asio::buffer(&logOn, sizeof(LogOn)));
}
uint32_t counter = 0;
while (1 == 1)
{
std::string number = std::to_string(counter);
std::string message;
if (this->isClient0)
{
message = "Client0: " + number;
}
else
{
message = "Client1: " + number;
}
TextMessage textMessage;
textMessage.header.messageLength += message.size() + 1;
if (this->useTLS)
{
size_t transferred = asio::write(*socketSSL, asio::buffer(&textMessage, sizeof(TextMessage)));
transferred = asio::write(*socketSSL, asio::buffer(message.c_str(), message.length() + 1));
}
else
{
size_t transferred = asio::write(*socket, asio::buffer(&textMessage, sizeof(TextMessage)));
transferred = asio::write(*socket, asio::buffer(message.c_str(), message.length() + 1));
}
++counter;
//Sleep(1000);
}
}
};
void clientTest(uint32_t sessionId, bool isClient0, bool useTLS,
uint32_t servicePort)
{
#ifdef WINDOWS
if (isClient0)
{
SetThreadDescription(GetCurrentThread(), L"Client0");
}
else
{
SetThreadDescription(GetCurrentThread(), L"Client1");
}
#endif
Client client;
client.run(sessionId, isClient0, useTLS, servicePort);
while (1 == 1)
{
Sleep(1000);
}
}
void SSLRelayTest()
{
SSLRelayServer relayServer;
const uint32_t threadsNum = 1;
const bool useTLS = true;
const uint32_t servicePort = 777;
relayServer.run(servicePort, threadsNum, useTLS);
Sleep(5000);
std::vector<std::thread> threads;
const uint32_t sessionId = 0;
threads.emplace_back(clientTest, sessionId, true, useTLS, servicePort);
threads.emplace_back(clientTest, sessionId, false, useTLS,servicePort);
for (std::thread& threadIt : threads)
{
threadIt.join();
}
}
}
What this sample does ?
It runs SSL relay server on localhost port 777 which connects two clients and allows exchanging
of text messages between them.
Promblem:
When I run that sample server returns error "errorCode= 167772441, message=decryption failed or bad record mac (SSL routines)" in void "asyncReadNextMessage(uint32_t messageSize)"
I found out this is caused by client which reads and writes to client SSL socket from separate threads (changing variable useTLS to 0 runs it on normal socket which proves that it is SSL socket problem).
Apparently TLS is not full-duplex protocol (I did not know about that). I can't synchronize access to read and write with mutex because when socket enters read state and there is no
incoming message writing to socked will be blocked forever. At this thread Boost ASIO, SSL: How do strands help the implementation?
someone recommended using strands but someone else wrote that asio only synchronizes not concurrent execution of read and write handles which does not fix the problem.
I expect that somehow there is a way to synchronize read and write to SSL socket. I'm 100% sure that problem lies in synchronizing read and writes to socket because when I wrote example with read and write to socket done by one thread it worked. However then client always expects that there is message to read which can block all write if there is not. Can it be solved without using separate sockets for reads and writes ?
Okay I figured it out by writting many diffrent samples of code including SSL sockets.
When asio::io_context is already running you can't simply schedule asio::async_write or asio::async_read from thread which is not
associated with strand connected to that socket.
So when there is:
asio::async_write(*this->socketSSL, asio::buffer(pBuffer, bufferSize), asio::bind_executor(readWriteStrand,writeMessageLambda));
but thread which is executing is not running from readWriteStrand strand then it should be written as:
asio::post(ioContext, asio::bind_executor(readWriteStrand, [&]() {asio::async_read(*this->socketSSL, asio::buffer(readBuffer.data() + this->readDataIt, messageSize), asio::bind_executor(readWriteStrand, readMessageLambda)); }));
I am using C++Builder Enterprise and need some ideas.
I have a Form with a bunch of TButton and TSpeedButton controls on it. What I want to have happen is that, when a given button is pressed, I want to disable it and several others, while enabling several other buttons, i.e. state changes.
The issue is that I am duplicating the enable/disable code in a bunch of places. I've thought about somehow using the TNotifyEvent delegation to alert the buttons of a state change, but I don't think that delegation technique will work in this situation. I want to avoid creating a bunch of sub-classes of TButton/TSpeedButton.
I also would like to try to use techniques that are available from the VCL, as in each component carries an observer list and wonder if I could leverage that somehow.
My 2 cents worth..
I have done a proof of concept for your problem, would need a lot more work but I think it is doable and should do what you want.
I will do more work on it and post if there is interest.
To find all controls of a class type on a form
--- TControlAgent->FindTControl(this, "TButton");
I added 4 buttons on a form, added code bellow to button1 click event,
TControlAgent->SetControlProperty("Enabled", "TButton", false, true, "Button3");
in this case, want controls with Enabled property whose class name is TButton, state = true or false, execute the action but but exclude control named TButton3
There result was all TButtons on the form were set to disable except for button 3
(note: the exclude option would be a lookup list of controls to be excluded from any action or be able to set a state that is not the state eg Enabled = !true or !false )
In the click event of button3 I placed the following code;
TControlAgent->SetControlProperty("Enabled", "TButton", true, true, "");
The result of this is to re-enable all the controls, this is just an idea but with with the extra work it could be possible to execute any action on any control from a single parent form for any form in a collection of forms.
I also think it could be possible to fire events, just a crazy idea...
.h file using berlin 10.1
//---------------------------------------------------------------------------
#ifndef TControlAgentH
#define TControlAgentH
//---------------------------------------------------------------------------
#include <System.SysUtils.hpp>
#include <System.Classes.hpp>
#include <Vcl.Controls.hpp>
#include <System.TypInfo.hpp>
#include <vector>
#include <algorithm>
//---------------------------------------------------------------------------
class PACKAGE TControlAgent : public TComponent
{
private:
std::vector<TControl*> FControls;
protected:
public:
std::vector<UnicodeString> excludeControlNames;
__fastcall TControlAgent(TComponent* Owner);
TControl * __fastcall GetControl(TControl* ctrl, UnicodeString property);
void __fastcall FindTControl(TForm *f, UnicodeString className);
TControl* __fastcall SetControlProperty(UnicodeString property, UnicodeString className, bool state, bool exec, UnicodeString excludeControlName );
__published:
};
//---------------------------------------------------------------------------
#endif
.cpp file
//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "TControlAgent.h"
#pragma package(smart_init)
//---------------------------------------------------------------------------
// ValidCtrCheck is used to assure that the components created do not have
// any pure virtual functions.
//
//---------------------------------------------------------------------------
// component to act as agent for other components derived from TControl
//
// Components have properties and events, is it possible to get all TControls into a vector
// then be able to get a property of a component then fire an event or carry out an action
// on the component!!!!
//---------------------------------------------------------------------------
static inline void ValidCtrCheck(TControlAgent *)
{
new TControlAgent(NULL);
}
//---------------------------------------------------------------------------
__fastcall TControlAgent::TControlAgent(TComponent* Owner)
: TComponent(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TControlAgent::FindTControl(TForm *f, UnicodeString className)
{
FControls.clear();
for(int i = 0; i < f->ControlCount; i++)
{
if(f->Controls[i]->ClassName() == className) //control classes that to set as a group
FControls.push_back(f->Controls[i]);
}
//note: could have a function that appends other class names
}
//---------------------------------------------------------------------------
TControl* __fastcall TControlAgent::SetControlProperty(UnicodeString property, UnicodeString className, bool state, bool exec, UnicodeString excludeControlName )
{
PPropInfo propinfo;
for(int i = 0; i < FControls.size(); i++)
{
if(FControls[i]->ClassName() == className)
{
propinfo = GetPropInfo(FControls[i], property);
if (!propinfo)
continue;
if(exec && FControls[i]->Name != excludeControlName )
{
if(property == "Enabled")
FControls[i]->Enabled = state;
}
}
}
}
//---------------------------------------------------------------------------
namespace Tcontrolagent
{
void __fastcall PACKAGE Register()
{
TComponentClass classes[1] = {__classid(TControlAgent)};
RegisterComponents(L"SQLite", classes, 0);
}
}
//---------------------------------------------------------------------------
**** UPDATED *****
Progress of TControlAgent
Obviously still work in progress but this code works, create a form with a TPanel, to this add 6 TButtons
Add a TControl Agent, set the OnButtonClick event as per Form code bellow
TControlAgent code
.h
//---------------------------------------------------------------------------
#ifndef TControlAgentH
#define TControlAgentH
//---------------------------------------------------------------------------
#include <System.SysUtils.hpp>
#include <System.Classes.hpp>
#include <Vcl.Controls.hpp>
#include <System.TypInfo.hpp>
#include <vector>
#include <algorithm>
class TControls;
class TControlGroup;
typedef void __fastcall (__closure *TControlAgentOnClick)(System::TObject *Sender, TControls *ctrl);
typedef void __fastcall (__closure *TButtonClickEvent)(System::TObject *Sender);
enum action {aEnabled, aOnClick, aChange};
enum tcontrols {tbutton, tedit, tcombo, tcheckbox};
//---------------------------------------------------------------------------
class PACKAGE TControlAgent : public TComponent
{
private:
std::vector<TControls*> FControls;
std::vector<TControlGroup*> FControlGroups;
TControlAgentOnClick FClickSupliment;
TButtonClickEvent FOnButtonClick;
bool FButtonClickRedirect;
protected:
public:
std::vector<UnicodeString> excludeControlNames; // not implemented yet
std::vector<TControlGroup*> __fastcall Groups();
std::vector<TControls*> __fastcall Controls(int GroupIndex);
__fastcall TControlAgent(TComponent* Owner);
TControl * __fastcall GetControl(TControl* ctrl, UnicodeString property);
void __fastcall FindTControl(TForm *f, UnicodeString className);
void __fastcall FindTControl(TPanel *p, UnicodeString GroupName, bool ClearIfControlsExists);
void __fastcall SetControlProperty(TControl *ctrl, bool state, int Action);
int __fastcall GetGroup(String name);
void __fastcall SetControlClickEvent(String ClassName, String GroupName, String ExcludeGroup, int tControlType);
void __fastcall SetButtonPropValue(TButton* b, String Property, String Value, bool v);
int __fastcall AddTControl(TControl* c, String Group);
void __fastcall SetButtonPropValue(String Group, String ExcludeGroup,int TControlType,String Property,String GroupValue,bool GroupV,String excludeGroupValue,bool excludeGroupV);
__published:
__property bool TButtonClick = {read = FButtonClickRedirect, write = FButtonClickRedirect };
__property TControlAgentOnClick OnClickSuppliment={read=FClickSupliment, write=FClickSupliment};
__property TButtonClickEvent OnButtonClick = {read = FOnButtonClick, write = FOnButtonClick };
};
//---------------------------------------------------------------------------
class TControlGroup
{
public:
UnicodeString GroupName;
std::vector<TControls*> GroupControls;
__fastcall TControlGroup();
};
//---------------------------------------------------------------------------
class TControls
{
public:
TControl* ctrl;
bool WantButtonOnClick;
bool WantControlOnChange;
bool FireStateChange;
bool WantOnClickSupliment;
bool state;
__fastcall TControls();
};
#endif
.cpp
//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "TControlAgent.h"
#pragma package(smart_init)
//---------------------------------------------------------------------------
// ValidCtrCheck is used to assure that the components created do not have
// any pure virtual functions.
//
//---------------------------------------------------------------------------
// component to act as agent for other components derived from TControl
//
// Components have properties and events, is it possible to get all TControls into a vector
// then be able to get a property of a component then fire an event or carry out an action
// on the component!!!!
//---------------------------------------------------------------------------
struct IsCtrlGroup {
String _name;
IsCtrlGroup(String name) : _name(name)
{
}
bool operator()(const TControlGroup * item) const
{
return (item->GroupName == _name);
}
};
//---------------------------------------------------------------------------
struct IsClassName {
String _name;
IsClassName(String name) : _name(name)
{
}
bool operator()(const TControl * item) const
{
return (item->ClassName() == _name);
}
};
//---------------------------------------------------------------------------
struct IsCtrl {
TControl* _ctrl;
IsCtrl(TControl* ctrl) : _ctrl(ctrl) {
}
bool operator()(const TControls * item) const {
return (item->ctrl->Name == _ctrl->Name);
}
};
//---------------------------------------------------------------------------
static inline void ValidCtrCheck(TControlAgent *)
{
new TControlAgent(NULL);
}
//---------------------------------------------------------------------------
__fastcall TControlAgent::TControlAgent(TComponent* Owner)
: TComponent(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TControlAgent::FindTControl(TForm *f, UnicodeString className)
{
FControls.clear();
TControls* ctrl;
for(int i = 0; i < f->ControlCount; i++)
{
if(f->Controls[i]->ClassName() == className) //control classes that to set as a group
{
TControls* ctrl = new TControls();
ctrl->ctrl = f->Controls[i];
ctrl->FireStateChange = false;
ctrl->WantOnClickSupliment = false;
FControls.push_back(ctrl);
}
}
//note: could have a function that appends other class names
}
//---------------------------------------------------------------------------
void __fastcall TControlAgent::FindTControl(TPanel *p, UnicodeString GroupName, bool ClearIfControlsExists)
{
/*
group vector[]
--> controlsindex vector[index]
*/
TControlGroup* g;
TControls* ctrl;
int i = -1;
int group_index = -1, controls_index = -1;
// check if group name exists in group vector
group_index = GetGroup(GroupName);
//clear controls vector if exists, controls will not exist if group does not exist...
if(ClearIfControlsExists && group_index > 0)
FControlGroups[group_index]->GroupControls.clear();
// if group does not exist, push new group onto vector
if(group_index == -1)
{
g = new TControlGroup();
g->GroupName = GroupName;
FControlGroups.push_back(g);
group_index = GetGroup(GroupName);
}
//group must bnow exist
for(i = 0; i < p->ControlCount; i++)
{
TControls* ctrl = new TControls();
ctrl->ctrl = p->Controls[i];
FControlGroups[group_index]->GroupControls.push_back(ctrl);
controls_index = FControlGroups[group_index]->GroupControls.size() -1;
FControlGroups[group_index]->GroupControls[controls_index]->ctrl = p->Controls[i];
}
}
//---------------------------------------------------------------------------
int __fastcall TControlAgent::AddTControl(TControl* c, String Group)
{
int index;
TControlGroup* g;
int group_index = GetGroup(Group);
if(group_index == -1)
{
g = new TControlGroup();
g->GroupName = Group;
FControlGroups.push_back(g);
group_index = GetGroup(Group);
}
TControls* ctrl = new TControls();
ctrl->ctrl = c;
FControlGroups[group_index]->GroupControls.push_back(ctrl);
index = FControlGroups[group_index]->GroupControls.size()-1;
return(index);
}
//---------------------------------------------------------------------------
void __fastcall TControlAgent::SetControlClickEvent(String ClassName, String GroupName, String ExcludeGroup, int tControlType)
{
int group_index = GetGroup(GroupName);
for(int i = 0; i < FControlGroups[group_index]->GroupControls.size(); i++)
{
if(FControlGroups[group_index]->GroupControls[i]->ctrl->ClassName() == ClassName)
{
switch(tControlType)
{
case tbutton:
dynamic_cast<TButton*>(FControlGroups[group_index]->GroupControls[i]->ctrl)->OnClick = FOnButtonClick;
break;
case tedit:
break;
case tcombo:
break;
case tcheckbox:
break;
}
}
}
}
//---------------------------------------------------------------------------
std::vector<TControlGroup*> __fastcall TControlAgent::Groups()
{
return(FControlGroups);
}
//---------------------------------------------------------------------------
std::vector<TControls*> __fastcall TControlAgent::Controls(int GroupIndex)
{
return(FControlGroups[GroupIndex]->GroupControls);
}
//---------------------------------------------------------------------------
int __fastcall TControlAgent::GetGroup(String name)
{
int group_index =-1;
std::vector<TControlGroup*>::iterator found = std::find_if(FControlGroups.begin(), FControlGroups.end(), IsCtrlGroup(name));
if(found != FControlGroups.end())
group_index = std::distance(FControlGroups.begin(), found);
return(group_index);
}
//---------------------------------------------------------------------------
void __fastcall TControlAgent::SetButtonPropValue(TButton* b, String Property, String Value, bool v)
{
PPropInfo propinfo;
propinfo = GetPropInfo(b, Property);
if (!propinfo)
return;
if(Value.IsEmpty())
SetPropValue(b, propinfo, v);
else
SetPropValue(b, propinfo, Value);
}
//---------------------------------------------------------------------------
void __fastcall TControlAgent::SetButtonPropValue(String Group,
String ExcludeGroup,
int TControlType,
String Property,
String GroupValue,
bool GroupV,
String excludeGroupValue,
bool excludeGroupV)
{
// Group can hold all TControls on a form
// ExcludeGroup contains TControls that will be excluded from an action on the Group controls
// Group is an existing group of TControls found on a container
// ExcludGroup is a group that can be found on a container or added to a Group
// then parsed to this method in ExcludeGroup param
int i;
PPropInfo propinfo;
TControl *c;
int group_index = GetGroup(Group);
int exclude_Group_index = GetGroup(ExcludeGroup);
TControl* ctrl;
for(i = 0; i < FControlGroups[group_index]->GroupControls.size(); i++)
{
c = FControlGroups[group_index]->GroupControls[i]->ctrl;
//check if TControl is to be excluded
std::vector<TControls*>::iterator found = std::find_if(FControlGroups[exclude_Group_index]->GroupControls.begin(),
FControlGroups[exclude_Group_index]->GroupControls.end(),
IsCtrl(c));
// if found, control is in the exclude list so continue, do not apply
// property value change
if(found != FControlGroups[exclude_Group_index]->GroupControls.end())
{
c = (*found)->ctrl;
//set property value for exclude group controls
propinfo = GetPropInfo(c, Property);
if(propinfo)
{
if(excludeGroupValue.IsEmpty())
SetPropValue(c, propinfo, excludeGroupV);
else
SetPropValue(c, propinfo, excludeGroupValue);
}
continue;
}
//if it gets here, c is not in exclude list
propinfo = GetPropInfo(c, Property);
if (!propinfo)
return;
if(GroupValue.IsEmpty())
SetPropValue(c, propinfo, GroupV);
else
SetPropValue(c, propinfo, GroupValue);
}
}
//---------------------------------------------------------------------------
namespace Tcontrolagent
{
void __fastcall PACKAGE Register()
{
TComponentClass classes[1] = {__classid(TControlAgent)};
RegisterComponents(L"SQLite", classes, 0);
}
}
//---------------------------------------------------------------------------
__fastcall TControls::TControls(){}
//---------------------------------------------------------------------------
__fastcall TControlGroup::TControlGroup(){}
Form Code
.cpp
Form has a TPanel with 6 TButtons placed on it
#run time TButton3 is disabled
//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "frmTControlTest.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma link "TControlAgent"
#pragma resource "*.dfm"
TForm3 *Form3;
//---------------------------------------------------------------------------
__fastcall TForm3::TForm3(TComponent* Owner)
: TForm(Owner)
{
int i;
std::vector<TControls*> group_controls;
//get ALL controls on a container
ControlAgent1->FindTControl(p, "Group1", true);
//create the exclude (for want of a better name) groups
/*
add
edit
save
delete
cancel
exit
*/
ControlAgent1->AddTControl(bnSave, "Group2");
ControlAgent1->AddTControl(bnCancel, "Group2");
ControlAgent1->AddTControl(bnAdd, "Group3");
ControlAgent1->AddTControl(bnEdit, "Group3");
ControlAgent1->AddTControl(bnDelete, "Group3");
ControlAgent1->AddTControl(bnExit, "Group3");
i = ControlAgent1->GetGroup("Group1");
group_controls = ControlAgent1->Controls(i);
ControlAgent1->SetControlClickEvent("TButton", "Group1", "", tbutton);
}
//---------------------------------------------------------------------------
void __fastcall TForm3::ControlAgent1ButtonClick(TObject *Sender)
{
TButton* b;
if((b = dynamic_cast<TButton*>(Sender)) == bnAdd )
ControlAgent1->SetButtonPropValue("Group1", "Group2", tbutton, "Enabled", "", false, "", true);
if((b = dynamic_cast<TButton*>(Sender)) == bnCancel )
ControlAgent1->SetButtonPropValue("Group1", "Group3", tbutton, "Enabled", "", false, "", true);
if((b = dynamic_cast<TButton*>(Sender)) == bnSave )
{
ControlAgent1->SetButtonPropValue("Group1", "Group3", tbutton, "Enabled", "", false, "", true);
//Do Stuff
}
}
//---------------------------------------------------------------------------
I'm having an error doing the Update when checking if(Game::vector.at(i).alivez()), the error is C2280.
The error says: "Enemy &Enemy::operator =(const Enemy &)': attempting to reference a deleted function. Project: Avoidance Game File:xutility
Game.cpp:
void Game::Init()
{
int i = 0;
while(i< Game::Enemies)
{
srand(time(NULL));
Game::vector.push_back(Enemy(0, (rand()% (int)Console::WindowWidth), (rand() % (int)Console::WindowHeight), rand()%1500/1000.0f));
i++;
}
GameOver = false;
Paused = false;
}
void Game::GameMenu()
{
cout << "1. Start Game\n2. Instructions\n3. Close Game\nChoose an option:";
}
void Game::Instructions()
{
Console::Clear();
cout << "Left arrow = left (duh)\nRight arrow = right (surprise)\nSpace Bar = Shoot\nEsc = Close Game\nP Key = Pause\n ";
system("pause");
}
void Game::fire(Player a)
{
a.mX;
}
void Game::Run()
{
while (!GameOver)
{
if (GetAsyncKeyState(VK_ESCAPE))
{
GameOver = true;
}
else if (GetAsyncKeyState((int)'P'))
{
Paused = !Paused;
}
}
}
void Game::Update()
{
if (!Paused)
{
mPlayer.Update();
for (int i = 0; i < Game::Enemies; i++)
{
Game::vector.at(i).Update();
if (Game::vector.at(i).alivez())
{
Game::vector.erase(Game::vector.begin() + i);
i--;
Game::Enemies--;
}
}
}
}
Game.h:
#pragma once
#include "stdafx.h"
#include "targetver.h"
#include <vector>
class Enemy;
class Game
{
int Enemies = 30;
bool Paused;
bool GameOver;
int Score;
Player mPlayer = Player();
std::vector<Enemy> vector;
public:
void Init();
void GameMenu();
void Instructions();
void fire(Player a);
void Run();
void Update();
};
Enemy.h:
class Enemy
{
enum Enemy_type {NormalEnemy};
Game game;
float mX;
float mY;
float speed;
Enemy_type type;
public:
bool alive;
Enemy(int type, int x, int y, float _speed)
{
switch (type)
{
case 0:
type = Enemy_type::NormalEnemy;
break;
}
mX = (float)x;
mY = (float)y;
speed = _speed;
alive = true;
}
float GetX() { return mX; }
float GetY() { return mY; }
bool alivez() { return alive; }
void Kill() { alive = false; }
void Update();
void Draw();
};
I am trying to call the HappyTime onvif library from Swift.
I have the library linked in to my project and I am able to call some simple functions, but I am having trouble getting the syntax right in my call which passes my callback function.
Here is the Swift code:
func discoverCameras()
{
HappyInterface.sharedInstance().startProb()
//this line gives syntax error
HappyInterface.sharedInstance().setProbeCB(cameraDiscovered)
}
func cameraDiscovered(cameraFound:UnsafeMutablePointer<DEVICE_BINFO>)
{
table.reloadData()
}
my setProbeCB call gives this error:
Cannot convert value of type '(UnsafeMutablePointer) -> ()' to expected argument type 'UnsafeMutablePointer' (aka 'UnsafeMutablePointer, UnsafeMutablePointer<()>) -> ()>>')
Here is the Obj C implementation:
- (void) setProbeCB:(onvif_probe_cb *)cb {
set_probe_cb(*cb, 0);
}
This is the Obj C header:
- (void) setProbeCB:(onvif_probe_cb *)cb;
This is the C header:
#ifndef __H_ONVIF_PROBE_H__
#define __H_ONVIF_PROBE_H__
#include "onvif.h"
typedef void (* onvif_probe_cb)(DEVICE_BINFO * p_res, void * pdata);
#ifdef __cplusplus
extern "C" {
#endif
ONVIF_API void set_probe_cb(onvif_probe_cb cb, void * pdata);
ONVIF_API void set_probe_interval(int interval);
ONVIF_API int start_probe(int interval);
ONVIF_API void stop_probe();
ONVIF_API void send_probe_req();
#ifdef __cplusplus
}
#endif
#endif // __H_ONVIF_PROBE_H__
This is the C code:
/***************************************************************************************/
#define MAX_PROBE_FD 8
/***************************************************************************************/
onvif_probe_cb g_probe_cb = 0;
void * g_probe_cb_data = 0;
pthread_t g_probe_thread = 0;
int g_probe_fd[MAX_PROBE_FD];
int g_probe_interval = 30;
BOOL g_probe_running = FALSE;
/***************************************************************************************/
int onvif_probe_init(unsigned int ip)
{
int opt = 1;
SOCKET fd;
struct sockaddr_in addr;
struct ip_mreq mcast;
fd = socket(AF_INET, SOCK_DGRAM, 0);
if(fd < 0)
{
log_print(LOG_ERR, "socket SOCK_DGRAM error!\n");
return -1;
}
addr.sin_family = AF_INET;
addr.sin_port = htons(3702);
addr.sin_addr.s_addr = ip;
if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) == -1)
{
// if port 3702 already occupied, only receive unicast message
addr.sin_port = 0;
if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) == -1)
{
closesocket(fd);
log_print(LOG_ERR, "bind error! %s\n", sys_os_get_socket_error());
return -1;
}
}
/* reuse socket addr */
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&opt, sizeof(opt)))
{
log_print(LOG_WARN, "setsockopt SO_REUSEADDR error!\n");
}
memset(&mcast, 0, sizeof(mcast));
mcast.imr_multiaddr.s_addr = inet_addr("239.255.255.250");
mcast.imr_interface.s_addr = ip;
if (setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char*)&mcast, sizeof(mcast)) < 0)
{
#if __WIN32_OS__
if(setsockopt(fd, IPPROTO_IP, 5, (char*)&mcast, sizeof(mcast)) < 0)
#endif
{
closesocket(fd);
log_print(LOG_ERR, "setsockopt IP_ADD_MEMBERSHIP error! %s\n", sys_os_get_socket_error());
return -1;
}
}
return fd;
}
char probe_req1[] =
"<?xml version=\"1.0\" encoding=\"utf-8\"?>"
"<Envelope xmlns:tds=\"http://www.onvif.org/ver10/device/wsdl\" xmlns=\"http://www.w3.org/2003/05/soap-envelope\">"
"<Header>"
"<wsa:MessageID xmlns:wsa=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\">uuid:%s</wsa:MessageID>"
"<wsa:To xmlns:wsa=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\">urn:schemas-xmlsoap-org:ws:2005:04:discovery</wsa:To>"
"<wsa:Action xmlns:wsa=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\">http://schemas.xmlsoap.org/ws/2005/04/discovery/Probe</wsa:Action>"
"</Header>"
"<Body>"
"<Probe xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns=\"http://schemas.xmlsoap.org/ws/2005/04/discovery\">"
"<Types>tds:Device</Types>"
"<Scopes />"
"</Probe>"
"</Body>"
"</Envelope>";
char probe_req2[] =
"<?xml version=\"1.0\" encoding=\"utf-8\"?>"
"<Envelope xmlns:dn=\"http://www.onvif.org/ver10/network/wsdl\" xmlns=\"http://www.w3.org/2003/05/soap-envelope\">"
"<Header>"
"<wsa:MessageID xmlns:wsa=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\">uuid:%s</wsa:MessageID>"
"<wsa:To xmlns:wsa=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\">urn:schemas-xmlsoap-org:ws:2005:04:discovery</wsa:To>"
"<wsa:Action xmlns:wsa=\"http://schemas.xmlsoap.org/ws/2004/08/addressing\">http://schemas.xmlsoap.org/ws/2005/04/discovery/Probe</wsa:Action>"
"</Header>"
"<Body>"
"<Probe xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns=\"http://schemas.xmlsoap.org/ws/2005/04/discovery\">"
"<Types>dn:NetworkVideoTransmitter</Types>"
"<Scopes />"
"</Probe>"
"</Body>"
"</Envelope>";
int onvif_probe_req_tx(int fd)
{
int len;
int rlen;
char * p_bufs = NULL;
struct sockaddr_in addr;
int buflen = 10*1024;
p_bufs = (char *)malloc(buflen);
if (NULL == p_bufs)
{
return -1;
}
memset(p_bufs, 0, buflen);
sprintf(p_bufs, probe_req1, onvif_uuid_create());
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr("239.255.255.250");
addr.sin_port = htons(3702);
len = strlen(p_bufs);
rlen = sendto(fd, p_bufs, len, 0, (struct sockaddr *)&addr, sizeof(struct sockaddr_in));
if (rlen != len)
{
log_print(LOG_ERR, "onvif_probe_req_tx::rlen = %d,slen = %d\r\n", rlen, len);
}
usleep(1000);
memset(p_bufs, 0, buflen);
sprintf(p_bufs, probe_req2, onvif_uuid_create());
len = strlen(p_bufs);
rlen = sendto(fd, p_bufs, len, 0, (struct sockaddr *)&addr, sizeof(struct sockaddr_in));
if (rlen != len)
{
log_print(LOG_ERR, "onvif_probe_req_tx::rlen = %d,slen = %d\r\n", rlen, len);
}
free(p_bufs);
return rlen;
}
BOOL onvif_parse_device_binfo(XMLN * p_node, DEVICE_BINFO * p_res)
{
XMLN * p_EndpointReference;
XMLN * p_Types;
XMLN * p_XAddrs;
p_EndpointReference = xml_node_soap_get(p_node, "EndpointReference");
if (p_EndpointReference)
{
XMLN * p_Address = xml_node_soap_get(p_EndpointReference, "Address");
if (p_Address && p_Address->data)
{
strncpy(p_res->EndpointReference, p_Address->data, sizeof(p_res->EndpointReference)-1);
}
}
p_Types = xml_node_soap_get(p_node, "Types");
if (p_Types && p_Types->data)
{
p_res->type = parse_DeviceType(p_Types->data);
}
p_XAddrs = xml_node_soap_get(p_node, "XAddrs");
if (p_XAddrs && p_XAddrs->data)
{
parse_XAddr(p_XAddrs->data, &p_res->XAddr);
if (p_res->XAddr.host[0] == '\0' || p_res->XAddr.port == 0)
{
return FALSE;
}
}
else
{
return FALSE;
}
return TRUE;
}
BOOL onvif_probe_res(XMLN * p_node, DEVICE_BINFO * p_res)
{
XMLN * p_body = xml_node_soap_get(p_node, "Body");
if (p_body)
{
XMLN * p_ProbeMatches = xml_node_soap_get(p_body, "ProbeMatches");
if (p_ProbeMatches)
{
XMLN * p_ProbeMatch = xml_node_soap_get(p_ProbeMatches, "ProbeMatch");
while (p_ProbeMatch && soap_strcmp(p_ProbeMatch->name, "ProbeMatch") == 0)
{
if (onvif_parse_device_binfo(p_ProbeMatch, p_res))
{
if (g_probe_cb)
{
g_probe_cb(p_res, g_probe_cb_data);
}
}
p_ProbeMatch = p_ProbeMatch->next;
}
}
else
{
XMLN * p_Hello = xml_node_soap_get(p_body, "Hello");
if (p_Hello)
{
if (onvif_parse_device_binfo(p_Hello, p_res))
{
if (g_probe_cb)
{
g_probe_cb(p_res, g_probe_cb_data);
}
}
}
}
}
return TRUE;
}
int onvif_probe_net_rx()
{
int i;
int ret;
int maxfd = 0;
int fd = 0;
char rbuf[10*1024];
fd_set fdread;
struct timeval tv = {1, 0};
FD_ZERO(&fdread);
for (i = 0; i < MAX_PROBE_FD; i++)
{
if (g_probe_fd[i] > 0)
{
FD_SET(g_probe_fd[i], &fdread);
if (g_probe_fd[i] > maxfd)
{
maxfd = g_probe_fd[i];
}
}
}
ret = select(maxfd+1, &fdread, NULL, NULL, &tv);
if (ret == 0) // Time expired
{
return 0;
}
for (i = 0; i < MAX_PROBE_FD; i++)
{
if (g_probe_fd[i] > 0 && FD_ISSET(g_probe_fd[i], &fdread))
{
int rlen;
int addr_len;
struct sockaddr_in addr;
unsigned int src_ip;
unsigned int src_port;
XMLN * p_node;
fd = g_probe_fd[i];
addr_len = sizeof(struct sockaddr_in);
rlen = recvfrom(fd, rbuf, sizeof(rbuf), 0, (struct sockaddr *)&addr, (socklen_t*)&addr_len);
if (rlen <= 0)
{
log_print(LOG_ERR, "onvif_probe_net_rx::rlen = %d, fd = %d\r\n", rlen, fd);
continue;
}
src_ip = addr.sin_addr.s_addr;
src_port = addr.sin_port;
p_node = xxx_hxml_parse(rbuf, rlen);
if (p_node == NULL)
{
log_print(LOG_ERR, "onvif_probe_net_rx::hxml parse err!!!\r\n");
}
else
{
DEVICE_BINFO res;
memset(&res, 0, sizeof(DEVICE_BINFO));
onvif_probe_res(p_node, &res);
}
xml_node_del(p_node);
}
}
return 1;
}
void * onvif_probe_thread(void * argv)
{
int count = 0;
int i = 0;
int j = 0;
for (; i < get_if_nums() && j < MAX_PROBE_FD; i++, j++)
{
unsigned int ip = get_if_ip(i);
if (ip != 0 && ip != inet_addr("127.0.0.1"))
{
g_probe_fd[j] = onvif_probe_init(ip);
}
}
for (i = 0; i < MAX_PROBE_FD; i++)
{
if (g_probe_fd[i] > 0)
{
onvif_probe_req_tx(g_probe_fd[i]);
}
}
while (g_probe_running)
{
if (onvif_probe_net_rx() == 0)
{
count++;
}
if (count >= g_probe_interval)
{
count = 0;
for (i = 0; i < MAX_PROBE_FD; i++)
{
if (g_probe_fd[i] > 0)
{
onvif_probe_req_tx(g_probe_fd[i]);
}
}
}
usleep(1000);
}
g_probe_thread = 0;
return NULL;
}
ONVIF_API void set_probe_cb(onvif_probe_cb cb, void * pdata)
{
g_probe_cb = cb;
g_probe_cb_data = pdata;
}
ONVIF_API void send_probe_req()
{
int i;
for (i = 0; i < MAX_PROBE_FD; i++)
{
if (g_probe_fd[i] > 0)
{
onvif_probe_req_tx(g_probe_fd[i]);
}
}
}
ONVIF_API void set_probe_interval(int interval)
{
g_probe_interval = interval;
if (g_probe_interval < 10)
{
g_probe_interval = 30;
}
}
ONVIF_API int start_probe(int interval)
{
g_probe_running = TRUE;
set_probe_interval(interval);
g_probe_thread = sys_os_create_thread((void *)onvif_probe_thread, NULL);
if (g_probe_thread)
{
return 0;
}
return -1;
}
ONVIF_API void stop_probe()
{
int i;
g_probe_running = FALSE;
while (g_probe_thread)
{
usleep(1000);
}
for (i = 0; i < MAX_PROBE_FD; i++)
{
if (g_probe_fd[i] > 0)
{
closesocket(g_probe_fd[i]);
g_probe_fd[i] = 0;
}
}
}
Here is what the DEVICE_BINFO struct looks like:
typedef struct
{
int type; // device type
char EndpointReference[100];
onvif_XAddr XAddr; // xaddr, include port host, url
} DEVICE_BINFO;
One thing that should be fixed is a mismatch in the number of arguments to the callback. Swift calls the Objective-C setProbeCB() method, giving it a pointer to the cameraDiscovered() function, which takes a single argument. Then setProbeCB() gives the function pointer to the C set_probe_cb() function, which expects a pointer to a function that takes two arguments.
Another observation is that setProbeCB() could just take onvif_probe_cb instead of onvif_probe_cb* and then call C code simply as set_probe_cb(cb, 0). However, I don't think it makes much difference.
Also, I think the question could have been distilled to a smaller size.
The following is a simplified example based on your original code. It shows how to implement a callback in Swift and have C code call it, but the real fun starts when passing data via callback parameters and return values. It gets very tricky very fast, and that's why the example doesn't show how to deal with DEVICE_BINFO in Swift code. It's a topic in its own right.
The clue to using (Objective-)C functions and types in Swift is figuring out how they are imported into Swift. For example, to find out how onvif_probe_cb is imported, type it on a line in the Swift code, place the cursor in it, and Quick Help will show you this:
Declaration: typealias onvif_probe_cb = (UnsafeMutablePointer<DEVICE_BINFO>, UnsafeMutablePointer<Void>) -> Void
Declared in: clib.h
That tells us the parameter and return types to use in our Swift implementation of the callback.
The example is by no means production quality: there are all kinds of things that can go haywire in terms of memory management etc. Please see the code comments for additional info.
First, here is the C code header (clib.h):
#ifndef clib_h
#define clib_h
#include <stdio.h>
typedef struct {
char hostname[50];
int32_t port;
char url[200];
} onvif_XAddr;
typedef struct
{
int type; // device type
char EndpointReference[100];
onvif_XAddr XAddr; // xaddr, include port host, url
} DEVICE_BINFO;
/**
* This is the typedef of the function pointer to be used for our callback.
* The function takes a pointer to DEVICE_BINFO and a pointer to some arbitrary
* data meaningful to the code that provides the callback implementation. It will
* be NULL in this example.
*/
typedef void (* onvif_probe_cb)(DEVICE_BINFO * p_res, void * pdata);
/**
* A function to set the callback.
*/
void set_probe_cb(onvif_probe_cb cb, void * pdata);
/**
* This is a function that calls the callback.
*/
void find_device();
#endif /* clib_h */
Here is the rest of our C source (clib.c):
#include "clib.h"
#include <string.h>
onvif_probe_cb gCB = 0; // global variable to store the callback pointer
void * gUserData = 0; // global variable to store pointer to user data
DEVICE_BINFO gDeviceInfo; // global variable to store device info struct
void find_device() {
// Set up gDeviceInfo
gDeviceInfo.XAddr.port = 1234;
strcpy( gDeviceInfo.XAddr.hostname, "myhost");
strcpy( gDeviceInfo.XAddr.url, "http://junk.com");
gDeviceInfo.type = 777;
// ... and, if a callback is available, call it with the device info
if (gCB) gCB(&gDeviceInfo, gUserData);
else puts("No callback available");
}
void set_probe_cb(onvif_probe_cb cb, void * pdata) {
gCB = cb;
gUserData = pdata;
}
Here is the Objective-C wrapper header (oclib.h):
#ifndef oclib_h
#define oclib_h
#import "clib.h"
#import <Foundation/Foundation.h>
/**
* Interface of an Objective-C wrapper around C code in clib.*. We could have
* gone straight to C from Swift, but I'm trying to keep the example close to the
* code in the question. Also, this extra Objective C layer could be helpful in
* translating data structures, such as DEVICE_BINFO, between C and Swift, since
* Objective-C plays much nicer with C data types. This is no surprise: any C code
* is valid Objective-C (Objective-C is a strict superset of C).
*/
#interface MyWrapper : NSObject
-(id)init;
// Please note: this one takes a single argument, while the C function it wraps
// takes 2; see the implementation.
-(void) setProbeCB:(onvif_probe_cb) cb;
-(void) findDevice;
#end
#endif /* oclib_h */
And the wrapper implementation (oclib.m):
#import "oclib.h"
/**
* Implementation of our Objective-C wrapper.
*/
#implementation MyWrapper
-(id)init { return self; }
-(void) setProbeCB:(onvif_probe_cb) cb {
// We don't want anything other than device info to be passed back and
// forth via the callback, so this wrapper function takes a single argument
// and passes 0 as the 2nd argument to the wrapped C function.
set_probe_cb(cb, 0);
}
-(void) findDevice {
find_device();
}
#end
Finally, here is the Swift code that implements the callback (main.swift):
var w : MyWrapper = MyWrapper()
/**
* This is the callback implementation in Swift. We don't use the 2nd argument, userData, but it still
* has to be present to satisfy the way the callback function pointer is specified in C code.
*/
func cameraDiscovered( info : UnsafeMutablePointer<DEVICE_BINFO>, userData : UnsafeMutablePointer<Void>) {
print("Called the Swift callback!")
let devInfo : DEVICE_BINFO = info.memory;
print( "The device type is \(devInfo.type)")
print( "The device port is \(devInfo.XAddr.port)")
}
// Provide the callback to C code via Objective-C
w.setProbeCB(cameraDiscovered)
// ... and call a function that will cause the C code to invoke the callback.
w.findDevice()
The bridging header just has #import oclib.h, thus exposing the contents of both C and Objective-C headers to Swift.
The expected output:
Called the Swift callback!
The device type is 777
The device port is 1234
I'm trying to use DWrite to draw text in my dx11 app but I'm having lot of problems, I shared resources beetween D3D10 Device and D3D11 Device because dx10 is capable to connect D3D with D2D, that's the code of my GraphicsDevice:
// File: GraphicsDevice.h
#pragma once
#ifndef _GRAPHICSDEVICE_H_
#define _GRAPHICSDEVICE_H_
#ifndef _DEFINES_H_
#include "Defines.h"
#endif
#ifndef _COLOR_H_
#include "Color.h"
#endif
#ifndef _UTILITIES_H_
#include "Utilities.h"
#endif
#ifndef _DWRITE_H_
#include "DWrite.h"
#endif
// Forward declaration
namespace BSGameFramework { ref class Game; }
using namespace BSGameFramework;
using namespace System;
namespace BSGameFramework
{
namespace Graphics
{
public ref class GraphicsDevice
{
public:
/// <summary>GraphicsDevice constructor.</summary>
/// <param name="game">The game wich the device has to work.</param>
GraphicsDevice(Game^ game);
virtual ~GraphicsDevice();
/// <summary>Clear the screen.</summary>
/// <param name="color">The color that the screen background will assume after clearing.</param>
void Clear(Color color);
/// <summary>Render on the screen.</summary>
void Render();
/// <summary>Set the full screen state.</summary>
void FullScreen(bool isFullScreen);
property Color BlendFactor
{
Color get()
{
return blendFactor_;
}
void set(Color blendFactor_)
{
blendFactor_ = BlendFactor;
}
}
property D3D_DRIVER_TYPE DriverType
{
D3D_DRIVER_TYPE get()
{
return driverType_;
}
}
property D3D_FEATURE_LEVEL FeatureLevel
{
D3D_FEATURE_LEVEL get()
{
return featureLevel_;
}
}
property ID3D11Device* D3DDevice
{
ID3D11Device* get()
{
return d3dDevice_;
}
}
property ID3D11DeviceContext* D3DContext
{
ID3D11DeviceContext* get()
{
return d3dContext_;
}
}
property ID3D10Device1* D3DDevice10_1
{
ID3D10Device1* get()
{
return d3dDevice10_1_;
}
}
property ID2D1Factory* D2DFactory
{
ID2D1Factory* get()
{
return d2dFactory_;
}
}
property ID2D1RenderTarget* D2DRenderTarget
{
ID2D1RenderTarget* get()
{
return d2dRenderTarget_;
}
}
property ID2D1SolidColorBrush* D2DSolidColorBrush
{
ID2D1SolidColorBrush* get()
{
return d2dSolidColorBrush_;
}
}
property IDWriteFactory* DWriteFactory
{
IDWriteFactory* get()
{
return dWriteFactory_;
}
}
property int WindowWidth
{
int get()
{
return GetWindowWidth();
}
}
property int WindowHeight
{
int get()
{
return GetWindowHeight();
}
}
property HWND Window
{
HWND get()
{
return GetWindow();
}
}
property int SafeTitleArea
{
int get()
{
return safeTitleArea_;
}
void set(int safeTitleArea)
{
safeTitleArea_ = safeTitleArea;
}
}
private:
void CreateD3D11Resources();
void CreateD3D10Resources(ID3D11Texture2D* d3d11Texture);
void CreateD2D1Resources(ID3D10Texture2D* d3d10Texture);
Game^ game_;
Color blendFactor_;
D3D_DRIVER_TYPE driverType_;
D3D_FEATURE_LEVEL featureLevel_;
int safeTitleArea_;
int GetWindowWidth();
int GetWindowHeight();
HWND GetWindow();
// Direct3D 11
ID3D11Device* d3dDevice_;
ID3D11DeviceContext* d3dContext_;
// Direct3D 10
ID3D10Device1* d3dDevice10_1_;
// Direct2D
ID2D1Factory* d2dFactory_;
ID2D1RenderTarget* d2dRenderTarget_;
ID2D1SolidColorBrush* d2dSolidColorBrush_;
// DirectWrite
IDWriteFactory* dWriteFactory_;
IDXGISwapChain* swapChain_;
ID3D11RenderTargetView* backBufferTarget_;
};
}
}
#endif
// FILE: GraphicsDevice.cpp
#include "GraphicsDevice.h"
#include "Game.h"
#include "GraphicsDeviceNativeWrapper.h"
using namespace BSGameFramework::Graphics;
using namespace BSGameFramework;
inline GraphicsDevice::GraphicsDevice(Game^ game) : driverType_( D3D_DRIVER_TYPE_NULL ), featureLevel_( D3D_FEATURE_LEVEL_11_0 ),
d3dDevice_( 0 ), d3dContext_( 0 ), swapChain_( 0 ), backBufferTarget_( 0 )
{
game_ = game;
BlendFactor = Color::White;
CreateD3D11Resources();
}
inline GraphicsDevice::~GraphicsDevice()
{
if (backBufferTarget_)
{
backBufferTarget_->Release();
}
if (swapChain_)
{
swapChain_->Release();
}
if (d3dContext_)
{
d3dContext_->Release();
}
if (d3dDevice_)
{
d3dDevice_->Release();
}
backBufferTarget_ = 0;
swapChain_ = 0;
d3dContext_ = 0;
d3dDevice_ = 0;
}
inline void GraphicsDevice::Clear(Color color)
{
if (d3dContext_ == 0)
{
return;
}
float clearColor[4];
Vec4 convertedColor = Utilities::ColorToVec4(color);
clearColor[0] = convertedColor.values[0];
clearColor[1] = convertedColor.values[1];
clearColor[2] = convertedColor.values[2];
clearColor[3] = convertedColor.values[3];
d3dContext_->ClearRenderTargetView(backBufferTarget_, clearColor);
}
inline void GraphicsDevice::Render()
{
swapChain_->Present(0, 0);
}
inline void GraphicsDevice::FullScreen(bool isFullScreen)
{
swapChain_->SetFullscreenState(isFullScreen, NULL);
}
inline int GraphicsDevice::GetWindowWidth()
{
return game_->WindowWidth;
}
inline int GraphicsDevice::GetWindowHeight()
{
return game_->WindowHeight;
}
inline HWND GraphicsDevice::GetWindow()
{
return game_->Window;
}
#pragma region CreateD3D11Resources
inline void GraphicsDevice::CreateD3D11Resources()
{
HRESULT result;
RECT dimensions;
GetClientRect(Window, &dimensions);
unsigned int width = dimensions.right - dimensions.left;
unsigned int height = dimensions.bottom - dimensions.top;
D3D_DRIVER_TYPE driverTypes[] =
{
D3D_DRIVER_TYPE_HARDWARE,
D3D_DRIVER_TYPE_WARP,
D3D_DRIVER_TYPE_REFERENCE,
D3D_DRIVER_TYPE_SOFTWARE
};
unsigned int totalDriverTypes = ARRAYSIZE(driverTypes);
D3D_FEATURE_LEVEL featureLevels[] =
{
D3D_FEATURE_LEVEL_11_0,
D3D_FEATURE_LEVEL_10_1,
D3D_FEATURE_LEVEL_10_0,
D3D_FEATURE_LEVEL_9_3,
D3D_FEATURE_LEVEL_9_2,
D3D_FEATURE_LEVEL_9_1
};
unsigned int totalFeatureLevels = ARRAYSIZE(featureLevels);
DXGI_SWAP_CHAIN_DESC swapChainDesc;
ZeroMemory(&swapChainDesc, sizeof(swapChainDesc));
swapChainDesc.BufferCount = 2;
swapChainDesc.BufferDesc.Width = width;
swapChainDesc.BufferDesc.Height = height;
swapChainDesc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
swapChainDesc.BufferDesc.RefreshRate.Numerator = 60;
swapChainDesc.BufferDesc.RefreshRate.Denominator = 1;
swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
swapChainDesc.OutputWindow = game_->Window;
swapChainDesc.Windowed = true;
swapChainDesc.BufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
swapChainDesc.BufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;
swapChainDesc.SampleDesc.Count = 1;
swapChainDesc.SampleDesc.Quality = 0;
unsigned int creationFlags = 0;
#ifdef _DEBUG
creationFlags |= D3D11_CREATE_DEVICE_DEBUG;
#endif
unsigned int driver = 0;
pin_ptr<IDXGISwapChain*> swapChainPointer;
swapChainPointer = &swapChain_;
pin_ptr<ID3D11Device*> d3dDevicePointer;
d3dDevicePointer = &d3dDevice_;
pin_ptr<D3D_FEATURE_LEVEL> featureLevelPointer;
featureLevelPointer = &featureLevel_;
pin_ptr<ID3D11DeviceContext*> d3dContextPointer;
d3dContextPointer = &d3dContext_;
for (driver = 0; driver < totalDriverTypes; ++driver)
{
result = D3D11CreateDeviceAndSwapChain(0, driverTypes[driver], 0, creationFlags, featureLevels, totalFeatureLevels,
D3D11_SDK_VERSION, &swapChainDesc, swapChainPointer,
d3dDevicePointer, featureLevelPointer, d3dContextPointer);
if (SUCCEEDED(result))
{
driverType_ = driverTypes[driver];
break;
}
}
if (FAILED(result))
{
DXTRACE_MSG("Failed to create the Direct3D device!");
return;
}
ID3D11Texture2D* backBufferTexture;
result = swapChain_->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&backBufferTexture);
if (FAILED(result))
{
DXTRACE_MSG("Failed to get the swap chain back buffer!");
return;
}
pin_ptr<ID3D11RenderTargetView*> backBufferTargetPointer;
backBufferTargetPointer = &backBufferTarget_;
result = d3dDevice_->CreateRenderTargetView(backBufferTexture, 0, backBufferTargetPointer);
if (FAILED(result))
{
DXTRACE_MSG("Failed to create the render target view!");
return;
}
d3dContext_->OMSetRenderTargets(1, backBufferTargetPointer, 0);
D3D11_VIEWPORT viewport;
viewport.Width = static_cast<float>(width);
viewport.Height = static_cast<float>(height);
viewport.MinDepth = 0.0f;
viewport.MaxDepth = 1.0f;
viewport.TopLeftX = 0.0f;
viewport.TopLeftY = 0.0f;
d3dContext_->RSSetViewports(1, &viewport);
CreateD3D10Resources(backBufferTexture);
}
#pragma endregion
#pragma region CreateD3D10Resources
inline void GraphicsDevice::CreateD3D10Resources(ID3D11Texture2D* d3d11Texture)
{
//Load D3D10.DLL
HMODULE d3d10_1 = LoadLibrary("D3D10_1.dll");
// Get adapter of the current D3D11 device. Our D3D10 will run on the same adapter.
IDXGIDevice* dxgiDevice;
IDXGIAdapter* dxgiAdapter;
d3dDevice_->QueryInterface<IDXGIDevice>(&dxgiDevice);
dxgiDevice->GetAdapter(&dxgiAdapter);
SafeRelease<IDXGIDevice>(&dxgiDevice);
//Get address of the function D3D10CreateDevice1 dynamically.
typedef HRESULT (WINAPI* FN_D3D10CreateDevice1)(
IDXGIAdapter *pAdapter, D3D10_DRIVER_TYPE DriverType, HMODULE Software,
UINT Flags, D3D10_FEATURE_LEVEL1 HardwareLevel, UINT SDKVersion, ID3D10Device1 **ppDevice );
FN_D3D10CreateDevice1 fnCreate = (FN_D3D10CreateDevice1)GetProcAddress(d3d10_1, "D3D10CreateDevice1");
//Call D3D10CreateDevice1 dynamically.
pin_ptr<ID3D10Device1*> d3dDevice10_1Ptr = &d3dDevice10_1_;
fnCreate(dxgiAdapter, D3D10_DRIVER_TYPE_HARDWARE, NULL, D3D10_CREATE_DEVICE_BGRA_SUPPORT | D3D10_CREATE_DEVICE_DEBUG, D3D10_FEATURE_LEVEL_10_1, D3D10_1_SDK_VERSION, d3dDevice10_1Ptr);
//Create a D3D10.1 render target texture and share it with our D3D11.
D3D10_TEXTURE2D_DESC tDesc;
tDesc.Width = game_->WindowWidth;
tDesc.Height = game_->WindowHeight;
tDesc.MipLevels = 1;
tDesc.ArraySize = 1;
tDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
tDesc.SampleDesc.Count = 1;
tDesc.SampleDesc.Quality = 0;
tDesc.Usage = D3D10_USAGE_DEFAULT;
//EVEN IF YOU WON'T USE AS SHADER RESOURCE, SET THIS BIND FLAGS:
tDesc.BindFlags = D3D10_BIND_RENDER_TARGET | D3D10_BIND_SHADER_RESOURCE;
tDesc.CPUAccessFlags = 0;
tDesc.MiscFlags = D3D10_RESOURCE_MISC_SHARED;
//Create the RT texture on D3D10
ID3D10Texture2D* texture;
d3dDevice10_1_->CreateTexture2D(&tDesc, NULL, &texture);
//Get DXGI Resource and retrieve the sharing handle.
IDXGISurface* dxgiSurface;
IDXGIResource* dxgiResource;
HANDLE shareHandle;
texture->QueryInterface<IDXGISurface>(&dxgiSurface);
dxgiSurface->QueryInterface<IDXGIResource>(&dxgiResource);
dxgiResource->GetSharedHandle(&shareHandle);
SafeRelease(&dxgiResource);
SafeRelease(&dxgiSurface);
//Call D3D 11 to open shared resource.
ID3D11Resource* d3d11Resource;
d3dDevice_->OpenSharedResource(shareHandle, __uuidof(ID3D11Resource), (void**)&d3d11Resource);
d3d11Resource->QueryInterface<ID3D11Texture2D>(&d3d11Texture);
SafeRelease(&d3d11Resource);
if (d3d11Texture)
{
d3d11Texture->Release();
}
CreateD2D1Resources(texture);
}
#pragma endregion
#pragma region CreateD2D1Resources
inline void GraphicsDevice::CreateD2D1Resources(ID3D10Texture2D* d3d10Texture)
{
pin_ptr<ID2D1Factory*> d2dFactoryPtr = &d2dFactory_;
pin_ptr<IDWriteFactory*> dWriteFactoryPtr = &dWriteFactory_;
//pin_ptr<ID2D1HwndRenderTarget*> d2dRenderTargetPtr = &d2dRenderTarget_;
//pin_ptr<ID2D1SolidColorBrush*> D2DSolidColorBrushPtr = &d2dSolidColorBrush_;
GraphicsDeviceNativeWrapper::CreateFactories(Window, d2dFactoryPtr, dWriteFactoryPtr);
//Get DXGI Surface from the created render target.
IDXGISurface1* pRT10;
d3d10Texture->QueryInterface<IDXGISurface1>(&pRT10);
FLOAT dpiX;
FLOAT dpiY;
d2dFactory_->GetDesktopDpi(&dpiX, &dpiY);
// Create a DC render target.
D2D1_RENDER_TARGET_PROPERTIES props = D2D1::RenderTargetProperties(
D2D1_RENDER_TARGET_TYPE_DEFAULT,
D2D1::PixelFormat(DXGI_FORMAT_UNKNOWN, D2D1_ALPHA_MODE_IGNORE),
static_cast<float>(dpiX),
static_cast<float>(dpiY)
);
// Create a Direct2D render target.
// Assuming m_pD2DFactory was previously created with:
//D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, __uuidof(ID2D1Factory), NULL,
// (void**)(&m_pD2DFactory));
pin_ptr<ID2D1RenderTarget*> renderTargetPtr = &d2dRenderTarget_;
d2dFactory_->CreateDxgiSurfaceRenderTarget(pRT10, (const D2D1_RENDER_TARGET_PROPERTIES *)&props, renderTargetPtr);
pin_ptr<ID2D1SolidColorBrush*> solidColorBrushPtr = &d2dSolidColorBrush_;
d2dRenderTarget_->CreateSolidColorBrush(D2D1::ColorF(D2D1::ColorF::White), solidColorBrushPtr);
}
#pragma endregion
// File GraphicsDeviceNativeWrapper.h
#pragma once
#ifndef _GRAPHICSDEVICENATIVEWRAPPER_H_
#define _GRAPHICSDEVICENATIVEWRAPPER_H_
#ifndef _DWRITE_H_
#include "DWrite.h"
#endif
#pragma managed(push, false)
namespace BSGameFramework
{
namespace Graphics
{
class GraphicsDeviceNativeWrapper abstract sealed
{
public:
static void CreateFactories(HWND window, ID2D1Factory** d2dFactory, IDWriteFactory** dWriteFactory/*,ID2D1RenderTarget** d2dRenderTarget, ID2D1SolidColorBrush** d2dSolidColorBrush*/)
{
HRESULT result;
result = D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED,__uuidof(ID2D1Factory), NULL, (void**)d2dFactory);
if (SUCCEEDED(result))
{
result = DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory), reinterpret_cast<IUnknown**>(dWriteFactory));
}
RECT rc;
GetClientRect(window, &rc);
D2D1_SIZE_U size = D2D1::SizeU(rc.right - rc.left, rc.bottom - rc.top);
}
static void CreateTextFormat(const wchar_t* font, IDWriteFactory* factory, IDWriteTextFormat** format)
{
factory->CreateTextFormat(font, NULL, DWRITE_FONT_WEIGHT_REGULAR, DWRITE_FONT_STYLE_NORMAL, DWRITE_FONT_STRETCH_NORMAL, 72.0f, L"en-us", format);
(*format)->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_CENTER);
(*format)->SetParagraphAlignment(DWRITE_PARAGRAPH_ALIGNMENT_CENTER);
}
};
}
}
#pragma managed(pop)
#endif
And this is my SpriteBatch:
// File: SpriteBatch.h
#pragma once
#ifndef _SPRITEBATCH_H_
#define _SPRITEBATCH_H_
#ifndef _DEFINES_H_
#include "Defines.h"
#endif
#ifndef _GRAPHICRESOURCE_H_
#include "GraphicResource.h"
#endif
#ifndef _TEXTURE2D_H_
#include "Texture2D.h"
#endif
#ifndef _GRAPHICSDEVICE_H_
#include "GraphicsDevice.h"
#endif
#ifndef _SPRITESORTMODE_H_
#include "SpriteSortMode.h"
#endif
#ifndef _BLENDSTATE_H_
#include "BlendState.h"
#endif
#ifndef _NATIVESPRITEBATCH_H_
#include "NativeSpritebatch.h"
#endif
#ifndef _SPRITEEFFECT_H_
#include "SpriteEffect.h"
#endif
#ifndef _IDRAWABLECOMPONENT_H_
#include "IDrawableComponent.h"
#endif
#ifndef _SPRITEFONT_H_
#include "SpriteFont.h"
#endif
using namespace BSGameFramework::GameBase;
namespace BSGameFramework
{
namespace Graphics
{
public ref class SpriteBatch : GraphicResource
{
public:
SpriteBatch(GraphicsDevice^ graphicsDevice);
~SpriteBatch();
void Begin();
void Begin(SpriteSortMode sortMode, BlendState^ blendState);
void Draw(IDrawableComponent^ component);
void DrawString(SpriteFont^ font, System::String^ text, Vector2 position);
void End();
private:
bool CompileD3DShader(char* filePath, char* entry, char* shaderModel, ID3DBlob** buffer);
void SortByDepth();
SpriteSortMode sortMode_;
BlendState ^blendState_;
System::Collections::Generic::List<IDrawableComponent^>^ componentList_;
bool beginInvoked_;
ID3D11VertexShader* solidColorVS_;
ID3D11PixelShader* solidColorPS_;
ID3D11InputLayout* inputLayout_;
ID3D11Buffer* vertexBuffer_;
ID3D11BlendState* alphaBlendState_;
NativeSpritebatch* spriteBatch;
};
}
}
#endif
// File: SpriteBatch.cpp
#include "SpriteBatch.h"
#ifndef _SPRITEBATCHBEGINENDEXCEPTION_H_
#include "SpriteBatchBeginEndException.h"
#endif
using namespace BSGameFramework::Graphics;
using namespace BSGameFramework::Exception;
inline SpriteBatch::SpriteBatch(GraphicsDevice^ graphicsDevice) : alphaBlendState_( 0 )
{
graphicDevice_ = graphicsDevice;
sortMode_ = SpriteSortMode::Deferred;
blendState_ = BlendState::AlphaBlend;
// ID3DBlob contiene un puntatore ad un dato di lunghezza qualsiasi, GetBufferPointer restituisce il puntatore e GetBufferSize la grandezza
ID3DBlob* vsBuffer = 0;
// Compila lo shader e salva il risultato nel buffer
bool compileResult = CompileD3DShader("TextureMap.fx", "VS_Main", "vs_4_0", &vsBuffer);
if (compileResult == false)
{
DXTRACE_MSG("Error compiling the vertex shader!");
return;
}
HRESULT d3dResult;
pin_ptr<ID3D11VertexShader*> solidColorVSPointer;
solidColorVSPointer = &solidColorVS_;
// Crea il vertex shader e lo salva in solidColorVS_ di tipo ID3D11VertexShader*
d3dResult = Device->D3DDevice->CreateVertexShader(vsBuffer->GetBufferPointer(), vsBuffer->GetBufferSize(), 0, solidColorVSPointer);
if (FAILED(d3dResult))
{
DXTRACE_MSG("Error creating the vertex shader!");
if (vsBuffer)
{
vsBuffer->Release();
}
return;
}
D3D11_INPUT_ELEMENT_DESC solidColorLayout[] =
{
{ "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
{ "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 12, D3D11_INPUT_PER_VERTEX_DATA, 0 }
};
unsigned int totalLayoutElements = ARRAYSIZE(solidColorLayout);
pin_ptr<ID3D11InputLayout*> inputLayoutPointer;
inputLayoutPointer = &inputLayout_;
// Crea l'input layout e lo salva in inputLayout di tipo ID3D11InputLayout*
d3dResult = Device->D3DDevice->CreateInputLayout(solidColorLayout, totalLayoutElements, vsBuffer->GetBufferPointer(), vsBuffer->GetBufferSize(), inputLayoutPointer);
vsBuffer->Release();
if (FAILED(d3dResult))
{
DXTRACE_MSG("Error creating the input layout!");
return;
}
ID3DBlob* psBuffer = 0;
// Compila il pixel shader e salva il risultato in psBuffer
compileResult = CompileD3DShader("TextureMap.fx", "PS_Main", "ps_4_0", &psBuffer);
if (compileResult == false)
{
DXTRACE_MSG("Error compiling pixel shader!");
return;
}
pin_ptr<ID3D11PixelShader*> solidColorPSPointer;
solidColorPSPointer = &solidColorPS_;
// Crea il pixel shader e lo salva in solidColorPS_ di tipo ID3D11PixelShader*
d3dResult = Device->D3DDevice->CreatePixelShader(psBuffer->GetBufferPointer(), psBuffer->GetBufferSize(), 0, solidColorPSPointer);;
psBuffer->Release();
if (FAILED(d3dResult))
{
DXTRACE_MSG("Error creating pixel shader!");
return;
}
spriteBatch = new NativeSpritebatch(Device->D3DDevice);
// Spostare nel Begin successivamente
D3D11_BLEND_DESC blendDesc;
ZeroMemory(&blendDesc, sizeof(D3D11_BLEND_DESC));
blendDesc.AlphaToCoverageEnable = FALSE;
blendDesc.IndependentBlendEnable = FALSE;
blendDesc.RenderTarget[0].BlendEnable = TRUE;
blendDesc.RenderTarget[0].SrcBlend = D3D11_BLEND_SRC_ALPHA;
blendDesc.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA;
blendDesc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD;
blendDesc.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_SRC_ALPHA;
blendDesc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_DEST_ALPHA;
blendDesc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
blendDesc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
float blendFactor[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
pin_ptr<ID3D11BlendState*> alphaBlendStatePointer;
alphaBlendStatePointer = &alphaBlendState_;
Device->D3DDevice->CreateBlendState(&blendDesc, alphaBlendStatePointer);
Device->D3DContext->OMSetBlendState(alphaBlendState_, blendFactor, 0xFFFFFFFF);
}
inline SpriteBatch::~SpriteBatch()
{
}
inline void SpriteBatch::Begin()
{
if (beginInvoked_)
{
throw gcnew SpriteBatchBeginEndException("Beetween two SpriteBatch begin methods you must call SpriteBacth End method!");
}
beginInvoked_ = true;
Device->D2DRenderTarget->BeginDraw();
Device->D2DRenderTarget->SetTransform(D2D1::IdentityMatrix());
if (componentList_ == nullptr)
{
componentList_ = gcnew System::Collections::Generic::List<IDrawableComponent^>();
}
}
inline void SpriteBatch::Begin(SpriteSortMode sortMode, BlendState^ blendState)
{
Begin();
sortMode_ = sortMode;
}
inline void SpriteBatch::Draw(IDrawableComponent^ component)
{
if (component == nullptr)
{
throw gcnew ArgumentNullException("Component argument is null, please ensure to initialize all components correctly!");
}
else
{
componentList_->Add(component);
}
}
inline void SpriteBatch::DrawString(SpriteFont^ font, System::String^ text, Vector2 position)
{
RECT rc;
GetClientRect(Device->Window, &rc);
// Create a D2D rect that is the same size as the window.
D2D1_RECT_F layoutRect = D2D1::RectF(
static_cast<FLOAT>(rc.left) / font->DpiScaleX,
static_cast<FLOAT>(rc.top) / font->DpiScaleY,
static_cast<FLOAT>(rc.right - rc.left) / font->DpiScaleX,
static_cast<FLOAT>(rc.bottom - rc.top) / font->DpiScaleY
);
// Use the DrawText method of the D2D render target interface to draw.
WCHAR textUnicode = Utilities::StringToWCHAR(text);
UINT32 cTextLength_ = (UINT32) wcslen(&textUnicode);
Device->D2DSolidColorBrush->SetColor(D2D1::ColorF(0,0,0,1));
Device->D2DSolidColorBrush->SetColor(D2D1::ColorF(255, 255, 255, 255));
Device->D2DRenderTarget->DrawText(&textUnicode, cTextLength_, font->DWriteTextFormat, layoutRect, Device->D2DSolidColorBrush);
}
inline void SpriteBatch::End()
{
if (componentList_->Count)
{
if (sortMode_ == SpriteSortMode::BackToFront)
{
SortByDepth();
}
for (int i = 0; i < componentList_->Count; i++)
{
Texture* text = componentList_[i]->Texture->TextureInfo;
unsigned int stride = sizeof(VertexPos);
unsigned int offset = 0;
Device->D3DContext->IASetInputLayout(inputLayout_);
if (componentList_[i]->Effect != SpriteEffect::None)
{
ID3D11Buffer* vertexBuffer;
float width = (float)text->textureDesc_.Width;
float height = (float)text->textureDesc_.Height;
D3D11_BUFFER_DESC vertexDesc;
ZeroMemory(&vertexDesc, sizeof(vertexDesc));
vertexDesc.Usage = D3D11_USAGE_DYNAMIC;
vertexDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
vertexDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
vertexDesc.ByteWidth = sizeof(VertexPos) * 6;
D3D11_SUBRESOURCE_DATA resourceData;
ZeroMemory(&resourceData, sizeof(resourceData));
pin_ptr<ID3D11Buffer*> vertexBufferPointer;
vertexBufferPointer = &vertexBuffer;
switch (componentList_[i]->Effect)
{
case BSGameFramework::Graphics::SpriteEffect::FlipHorizontally:
{
VertexPos verticesOne[] =
{
{ XMFLOAT3(width, height, 1.0f), XMFLOAT2(0.0f, 0.0f) },
{ XMFLOAT3(width, 0.0f, 1.0f), XMFLOAT2(0.0f, 1.0f) },
{ XMFLOAT3(0.0f, 0.0f, 1.0f), XMFLOAT2(1.0f, 1.0f) },
{ XMFLOAT3(0.0f, 0.0f, 1.0f), XMFLOAT2(1.0f, 1.0f) },
{ XMFLOAT3(0.0f, height, 1.0f), XMFLOAT2(1.0f, 0.0f) },
{ XMFLOAT3(width, height, 1.0f), XMFLOAT2(0.0f, 0.0f) },
};
resourceData.pSysMem = verticesOne;
Device->D3DDevice->CreateBuffer(&vertexDesc, &resourceData, vertexBufferPointer);
Device->D3DContext->IASetVertexBuffers(0, 1, &vertexBuffer, &stride, &offset);
break;
}
case BSGameFramework::Graphics::SpriteEffect::FlipVertically:
{
VertexPos verticesTwo[] =
{
{ XMFLOAT3(width, height, 1.0f), XMFLOAT2(1.0f, 1.0f) },
{ XMFLOAT3(width, 0.0f, 1.0f), XMFLOAT2(1.0f, 0.0f) },
{ XMFLOAT3(0.0f, 0.0f, 1.0f), XMFLOAT2(0.0f, 0.0f) },
{ XMFLOAT3(0.0f, 0.0f, 1.0f), XMFLOAT2(0.0f, 0.0f) },
{ XMFLOAT3(0.0f, height, 1.0f), XMFLOAT2(0.0f, 1.0f) },
{ XMFLOAT3(width, height, 1.0f), XMFLOAT2(1.0f, 1.0f) },
};
resourceData.pSysMem = verticesTwo;
Device->D3DDevice->CreateBuffer(&vertexDesc, &resourceData, vertexBufferPointer);
Device->D3DContext->IASetVertexBuffers(0, 1, &vertexBuffer, &stride, &offset);
break;
}
}
}
else
{
Device->D3DContext->IASetVertexBuffers(0, 1, &text->vertexBuffer_, &stride, &offset);
}
Device->D3DContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
Device->D3DContext->VSSetShader(solidColorVS_, 0, 0);
Device->D3DContext->PSSetShader(solidColorPS_, 0, 0);
Device->D3DContext->PSSetShaderResources(0, 1, &text->colorMap_);
Device->D3DContext->PSSetSamplers(0, 1, &text->colorMapSampler_);
spriteBatch->SetTranspose(Device->D3DContext, text, Device->WindowWidth, Device->WindowHeight, componentList_[i]->Position.X, componentList_[i]->Position.Y,
componentList_[i]->Scale.X, componentList_[i]->Scale.Y, componentList_[i]->Rotation);
Device->D3DContext->Draw(6, 0);
}
}
Device->D2DRenderTarget->EndDraw();
componentList_->Clear();
beginInvoked_ = false;
sortMode_ = SpriteSortMode::Deferred;
}
inline bool SpriteBatch::CompileD3DShader(char* filePath, char* entry, char* shaderModel, ID3DBlob** buffer)
{
DWORD shaderFlags = D3DCOMPILE_ENABLE_STRICTNESS;
#if defined(DEBUG) || defined(_DEBUG)
shaderFlags |= D3DCOMPILE_DEBUG;
#endif
ID3DBlob* errorBuffer = 0;
HRESULT result;
result = D3DX11CompileFromFile(filePath, 0, 0, entry, shaderModel, shaderFlags, 0, 0, buffer, &errorBuffer, 0);
if (FAILED(result))
{
if (errorBuffer != 0)
{
OutputDebugStringA((char*)errorBuffer->GetBufferPointer());
errorBuffer->Release();
}
return false;
}
if (errorBuffer != 0)
{
errorBuffer->Release();
}
return true;
}
inline void SpriteBatch::SortByDepth()
{
for (int i = 0; i < componentList_->Count - 1; i++)
{
for (int j = 1; j < componentList_->Count; j++)
{
if (componentList_[i]->ZIndex < componentList_[j]->ZIndex)
{
IDrawableComponent^ component = componentList_[i];
componentList_[i] = componentList_[j];
componentList_[j] = component;
}
}
}
}
When I call SpriteBatch.DrawString(...) from my C# app I'm not obtaining nothing written on my screen, can please somebody explaining me what's I'm missing? I'm new on DirectX programming so please be quiet with me xD Thanks!
There's a lot of code you posted and I didn't read it all, but I was trying to do the same thing (successfully) a few days ago and I might have some suggestions.
Overall, it looks like you do this more or less the same way I do. What I did different it that I created the shared texture using D3D11 device, but this should make no difference. The second thing, which I think could be the problem, is that you're not synchronizing the texture resource between D3D10 and D3D11.
When I tried to use such resources without synchronization, D2D was only rendering stuff once in like 50 calls, the rest just had no effect. I think I was continously blocking the resource when rendering it with D3D11.
You should create the texture using
tDesc.MiscFlags = D3D10_RESOURCE_MISC_SHARED_KEYEDMUTEX;
instead. Here are the details about this flag: MSDN. Basically, you query two IDXGIKeyedMutex interfaces from the shared texture objects on both D3D10 and D3D11 devices. You lock the D3D10 mutex when you draw your D2D stuff to the texture. You lock the D3D11 mutex when you want to use this texture in D3D11. You do this using IDXGIKeyedMutex::AcquireSync and IDXGIKeyedMutex::ReleaseSync. Just be sure to pass the same Key value to each consecutive D3D10 Release -> D3D11 Acquire and D3D11 Release -> D3D10 Acquire calls.
Oh, one more little, not important thing, I noticed this in your code:
texture->QueryInterface<IDXGISurface>(&dxgiSurface);
dxgiSurface->QueryInterface<IDXGIResource>(&dxgiResource);
I'm not 100% sure, but I think you can get the IDXGIResource interface directly from your texture.